Harrow



A. I. SMITH.

HARRUW,

APPLICATION FILED DEC.3I| 19H20- INVENTQR ATTORNEY A. I. SMITH.

HARROW.

APPLICATION FILED DEC-3|, 1920. V 1,411,196. v Patented Mar. 28, 1922.

. 2 SHEETS-SHEET 2.

l5' 54 I 4f, 55

? /0 f-f f-{f l? /5 I I3 l? I Ii 59 /e 9 59 ij' l 60 /f I y IIII A. J fs mvENToR ATTORNEY UNiTED STATES] 'ln-"rlaNT ori-ica AIDONIIRAMy J'UDSON SMITH, 0F SEATTLE, WASHINGTON.

ToaZZ whom t may concern:

Beit known that I, ADONIRAM J. SMITH, a citizen of the United `fntates, residing at Seattle, in: the county of King and State of lVashington, haveinvented new and useful Improvements in Harrows, of Which-the following is a specification.

Thisinvention Arelatesto a harrow, and

one object isto provide meanswhereby certain Vof the elements carrying theteeth of the harrow are caused to reciprocate laterally, `the reciprocating movement being leffected directly from the main shaft upon which the Vground wheels are mounted'.-

AA further object is to provide in connection with a frame and aplurality-of elements carrying teeth and mounted to reciprocate laterally, a crank shaft extending longitudinally of the frame and driven from the main axle, and means connecting the crank shaft with the reciprocable elements, whereby movement is imparted thereto;

A still further object is to provide, in connection with the construction above outlined, a plurality of shafts extending transversely of the frame and serving to mount a series or plurality of series, of disks, with means for changing the angular position of the shafts with reference to the longitudinal axis of the frame.

A still further obj ect is to provide, in conf nection with a crank shaft, driven as indicated, and serving the purpose stated, aplu'- rality of elements slidable longitudinally of the shaft and serving to mount a Aplurality of transverse shafts carrying disks, with means for efl'ectingthe movement of the elements slidable on the crankshaft for changing the angular position of the transverse shafts.

With the foregoing and other objects in view, the invention consists inthe novel construction, combination and arrangement of elements hereinafter described and claimed.

In the drawings, Figure l is a top plan view of the machine, Figure 2 is a View in side elevation7 the frame mounting the c ultivating elements being shown in dotted lines in raised position, Figure 3 is a'vertical transverse section through the platform, showing the drive from the main axle carrying the ground wheels, Figure 4 is a transverse section through the forward frame, showing the means for mounting and reciprocating one of the bars carrying cultivator teeth, Figure 5 shows the manner of mount-.e

vrbearing blocks at the points shown.

specification of Letters raten. Patented Man28,1922,4 Application led December 31, 1920. Serial Io. 434,285.

ing thefshaftsl carryingV the disks referred' to below. l'

In vcarrying-.out .my1invention, I provide a platform 150,'on Whichthe seat 11,0fthe driver is mounted, .the lower vside of this platform mounting bearings l2 inflwhicha main shaft 13 is journaled. This shaft carries ground wheels 14 ,and .15 and also carries a gear wheell 16 slidable longitudinal ofthe shaftby the operation' of lever 17 thershaft carryinga feather 18.', preventing the rotation of the gear wheel withreference to the shaft.

Meshing with :the gear wheel just mentioned is a beveled pinion 19 on a short shafty 20, ,the latter servingv .to drive the crank' shaft referred lto below.

The frame 21 of the aha-rrow per se includesrthe sidebars 22 and23 and the forward and rear transverse bars 24 and: 25. ,A draft elementk 26 serves the usual purpose.- The transversely movable or slidable are mounted in U-shaped elements 28 and pass loosely therethrough. These bars carry teeth 29, the bars being connected by pitmen 30 with crank shaft 31, driven from shaft 2O before mentioned. The crank shaft is mounted in bearings32 and 33 on the forward and rear elements of the frame and passes through bearing blocks 35 and 36. The block 35 receives the adjacent ends'A of two shaft.

sections 37 and 38,'which may normally be in alinement. The outer ends of thesesha-fts are mounted in bearings 39 on the side bars of the frame, and the two shaft sections 37 The bearing blocks 35 and 36 Vare slidable longitudinally of the crank shaft by the operation Vof the rod 46 connected with said rod is controlled by a lever 48'and the con'- necting link or linksillustrated. It is obvious that the shifting of the blocks 35y and 36, as described, will move the shaft sections in approximate alinement, out of alinement,

This y in order to produce the angular relation f shown in Figure l (in dotted lines) whereby the disksassume any desired position, within the limits of the construction.

The frame of the harrow may be'elevated' by the operation of the lever 50, drum 5L being rotatable by the pawl and ratchet mechanism shown, and said drum serving to wind a chain 52 having its outer end secured at 53. The frame may `further be retained in for :effectin carried by t e bars, means for driving thek form yis varied through the 'operation of lever 63 cooperating with the rod 64'.

Y yWhatis claimed is:

1. In a device of the class. described, a frame, bars mounted for movement transversely of the frame, a crank shaft mounted longitudinally of the frame, means connecting the crank shaft with the respective bars, the movement thereof, kteeth crank shaft, devices slidable on `the crank shaft, soil pulverizing devices and mountinfr means therefor controlled by the slidable debvices, Iand means for shifting said slidable devices.

4 2. In va device of the class described, a

frame, bars mounted for movement transversely of the frame, teeth carried byv the bars, a crank shaft and devices Lconnected therewith and with the bars for effecting the m ovement of the latter, a main shaft, ground wheels mounted thereon, means for driving the crank shaft from the main shaft, devices slidable on the crank shaft, soil pulverizing devices and mounting means therefor con trolled by the slidable devices, and means for shifting said slidable devices;

3. In a device of the class describeda frame, va plurality of shafts mounted therein and each including a plurality of sections in approximate alinement, means for mounting the approaching ends of the shaft sections, said means being slidable longitudinally of the frame, soil pulverizing devices carried by the shaft sections, a bar connected with the slidable mounting means, and'means for imparting movement tothe bar for changing the relative position ofY those shaft sections in approximate alinernent, a shaft on which the slidable vmeans are movable, and soil pulverizing devices reciprocatedin a transverse direction upon the rotation of the shaft'. In testimony whereof I affix my signature.

ADONIRAM JUDsoN SMITH. 

